So you installed Windows 8 Pro/Enterprise and signed in with a windows live account. Eager to customize your account you find that you can’t, Windows must be activated first. But how? The activation page offer no option to input the activation key.
This is because the Pro and Enterprise versions are for business use, it’s assumed that you are going to use KMS. So, if you don’t have that, use the the run dialog box, and type:
slui 3You will then see the Activation wizard, and a product key can be entered.